<< Heck yeah, I love cars.  This is apples and oranges though.  What does pot do for you, exactly?  I see nothing terribly beneficial to it, however, I can hop in my car and make it downtown in about 2 minutes whereas if I were to walk it, I might be there in 3 hours. >>
I value my personal enjoyment very much.  When I smoke dope, I generally have a great time or feel good while I'm high.  I feel this way at other times, as well, not just when I'm smoking.  It makes me feel more relaxed and I can think a little bit more outside of what I normally think.  There are times it sucks, but when you get into a wreck, that sucks as well.
Basically, its something I do for fun.  I don't do it all the time, but I do frequently use dope and enjoy it. 
You may not see that as the same value as getting downtown in 2 minutes, but I do.  Guess that is just a difference of opinion.
At least this thread is pretty calm and not full of the usual dirt and insults being thrown back and forth.